Pulley-block.



To all whom fit may concern:

UNrrED s'friiiljns PATENT oFF-ron. y

JOHN neinonmsm, or soufrn BEND, WASHINGTON.

PULLEY-nnocx.

Be it known that I, JOHN E. GnioHnIsT, a citizen of the United States,residing at South Bend, in the county of Pacific and State ofWashington, have invented a new.- and useful Pulley-Block, of which thefollowing is a specication.

The pulley block forming the subject matter of this application may beem loyedunder a variety of conditions whic willl readily suggestthemselves to a ig' er? However, it may be explainedthat 1n og-v gingoperations, the line-whereby the lo` are dragged from the Woods to thesaw mi or to the drive, is returned over a series o pulleys, commonlysuspended at a considerable elevation. These return pulleys are inconstant rotation, and on thisaccount fre-4 quently. runhot. -OwingtoftheirV elevatedv positions, it is difcult to oil them, the-oilingprocess commonly being deferred until it is often found that the pulleyhas run hot and bound. g y' l It is thev object of this invention to-provide a pulley which will contain a considerable quantity oflubricant, and feed the L, bearing'pin of the same, automatically, andslowly, upon `the ulley. A Another object of) the invention is toprovidea pulley the component parts of which are assembled in a noveland improved manner. v Another object of the invention is to plrovide .apulley, the bearing pin of whic is adequately protected against dirt anddust.

Another object of the invention is to provide a novel means forsuspending the pulle yWith the above and other objects in View, theinvention consists in the novel construction and arrangement of partshereinafter' described, delineated in the drawings andi claimed, itbeing understood that changes, falling within the scope of what isclaimed, may be made, withoutdeparting from the spirit of the invention.

Similar numerals of reference are employed to denote correspondinoartsthroughout the several figures of tle rawin s. i

n the accompanying drawings,-Figure 1` is a side elevation, parts beingbroken away ;f Fig. 2 is a transverse section; Fig. 3 is a specincauovofamusement. 'Patented Dec, 6, 19,10 Appnoaeion'mea umn es', 1910. serialNq. 551180.

top plan of the showing of Fig. ing removed; and'Fig. l is a spective ofthe bearing pin.

The pulley bloc@ now tb-be described, comprises arallel'des. 1 and 2.The side 1 is provi ed with an outstanding portion 3, the side beingthus enlarged so that a chamber 4 may be formed in the interior thereof.In the upper face of the outstandin portion 3 of the side 1 is, as seento'best adgvantage -in Fig. 3, an inlet 5 communieating withthechamberfl, and constituting -a meanswhereby a lubricant may be\i ntroduced into the chamber. The sides 1 and 2 are provided, upon their upperedges, with outstanding projections 6, oppositely disposed,` and adaptedlto regis-v ter between lugs 7, outstanding laterally from that ortionof the device which heref inafter wil be denominated the top anddenoted' by the .numeral 8. Through the elements Gand 7, pins 22 areextended,'the l pins being maintained'in place by means of cotter pins23, or. the like, the 'construction being such that the `sides 1 and. 2are hingedly connected with the top 8, by means 2 detail perpast theshank of the hook. 'Y By means of `the `construction last above pointedout, the pulley blockmay be mounted .for'swiveled construction,` theform 'ven to t e'hook 15 being such that the hoo the-su port whenthe-line which 1s moving throu the pulley blockis'zslackened, or 'jerkviolent y. i' y In the "adjacent faces of the sides 1 and12 are annularrecesses 17. A At the centers of the pins y22. Outstanding from thetopmovement upon av support'of any`desiredf lthese recesses 17, are'threadedopenings-18,

parts bea link 14, with which vis lconnected a hook f 15, the point 16of'which isv carriedY around will not' ump from y i roo' los

.Fig 4, is

extended into the chamber' 4, at the lower gagement in the openings-18and 19, the

ends 25 defining shoulders 26 in the bearing pin. The sheave 20 isadapted to be journaled for rotation upon the bearing pin 24; and thissheave 20 is provided upon its outer faces, with bosses 21adapted to fitclosely, yet antifrictionally, in the recesses 17 of the sides 1 and 2.The shoulders 26 upon the pin 24, prevent the sides 1 and 2 from bearingagainst the sheave 20.

n the bearing pin 24, there is an axial opening 27, communicating at oneend with the chamber 4. Adjacent the middle of the pin 24, this axialopening 27 is extended through the side wall of the pin, and shown at28. .A packing of some sort, denoted by the numeral 29, andpreferably-'a piece of cotton wicking, is mounted in the axial opening27 of the bearing pin. A

In practical operation, the lubricant is iiitroduced into the chamber 4through the inlet 5. Theflubricant will find its way slowly through theaxial openino' 27 of the bearing pin 24, and, passing out tirough theportion 28 of the opening in the pin, will serve to lubricate the sheave20 as the same rotates upon the pin. The presence of the packing 29 inthe interior of the bearing pin 24, serves to regulate the flow of thelubricant through the pin. Presupposing that the sides 1 and 2 areseparated from the top 8 and the bearing pin 24, the operation-of thedevice is as follows. The pin -24 is threadf ed into one of the openingsin the sides; say ist@ the opening 18 in the slee i. vThe sheave 20 isthen mounted uponthepin 24 and the side 2 is rotated upon the oppositethreaded end of the pin until both of the sides areq brought intoabutment with the shoulders 26 in the pin; or nearly into abut menttherewith. The projections 6 upon the 'sides 1 and 2 are brought intoalinement transversely of the' pulley block, and the top 8 is mounted inplace upon the sides 1 and 2, thelugs 7 of the top 8 inclosing theprojections 6 of the sides. The pins 22are mounted in place, and theCotter pins 23 are inserted through vthe pins 22. Obviously, when thesides 1 and 2are separated, the top 8 need not be entirely removed fromboth of the sides. But one of the pins 22 may be removed, the top 8being swung back pivotally upon the other pin 22 to permit the side fromwhich the lugs 7 have thus been freed, to be rotated. l

It willbe seen that the construction of the device is such, that,although the chamber 4 may be entirely filled with. lubricant, the topmay be removed, and the 8 may be unshackled from the side 2, permittingthe said side to be rotated free from the bearing pin 24, whereupon thesheave ulley block repaired, without materially c anging the osition ofthe oil holding side 1 of the pulley block oremptying the chamber 4 ofits contents.

' The parts 21 of the sheave 20 lit closely in the recesses 17 of thesides of the block, and the bearing pin 24 is so housed and protectedthat dirt will be prevented from accumulating about the bearing of thesheave, to interfere with the rotation thereof.` Having thus describedthe invention, wh'at isclaimed is i l. A pulley block consisting ofsides,A one of which is provided with an interio'r oil chamber 4havingVan inlet adjacent the top of the block; a bearing pin terminallymountedin the sides and having an axial opening communicating' with the chamberand extended through the side wall of they pin; and fa' sheave journaledfor rotation upon the p in between the sides.

2. A pulley block consisting of se arable sides; a top pivoted into oneof said) sides; a bearing pin terminallythreaded to engage the sides; asheave journaled for rotation upon the pin; and means for connectingtthetop with the other of said sides.

3. A pulley'block consistin of separable sides; a bearin pin terminalyengage the si es; a sheave journaled for rotation upon the pin; the inbeing provided with shoulders adaptedp to prevent the sides from bindingagainst the sheave; a

threaded to top terminally provided with elements adapted to interlockwith` the sides; and

means forfconnectin-g the top with the sides.l

4. A pulley block consisting of parallel- -sides having annular recessesin their ad .jacent faces, one of the sides being provided With aninterior oil chamber having an inlet adjacent the top of the block; abearing pin terminally threaded to engage the sides inthe recessedportions thereof, the pin having an axial opening communicating with thechamber and extended through theA side Wall of the pin; a sheavejournaled for rotation upon the pin and having oppositelyA disposedbosses adapted to fit closely but anti-frictionally in the recesses, thepin having shoulders to engage the sides to prevent the same frombinding'upon. the sheave; and a top removably connecting the sides abovethe sheave.

5. A pulley block consisting of parallel sides, one of which is rovidedwith an interior oil chamber having an inlet adjacent the top of theblock; there being a threaded vopening in the Wall of said sidecommunieating with thechamber adjacent the bottom thereof, and anopposilely disposed threaded opening in the other of said sides;

iis

a bearing pin terminally threaded to engage the threaded openings, thepin having an axial opening communicating with the chamber and extendedthrough the side Wall of the pin; a sheave'journaled for rotation uponthe pin; the sides having lateral projections at their upper ends; a tophaving spaced lugs between Which the projections et the sides areadapted to t;`and removfA able means for uniting the projections with 1othe lugs.

In testimony that I claim the. foregoing as my own, l have hereto aixedmy signature 1n the presence of tWo witnesses.

JOHN E.` GILCHRIST. Witnesses C. A.' STOPBELMAN,' N. W. BAKER.

